Voynov is signed through 2019. He already has a contract with Kings.
I know that but look at it with a $70m cap:
Gaborik ($4,875,000)--Kopitar ($6,800,000)--Brown ($5,875,000)
Pearson ($2,000,000)--Carter ($5,272,727)--Toffoli ($2,000,000)
King ($1,950,000)--Richards ($5,750,000)--Lewis ($1,525,000)
Clifford ($1,200,000)--Shore ($875,000)--
Andreoff ($605,000)
Muzzin ($4,000,000)--Doughty ($7,000,000)
Martinez ($4,000,000)--Voynov ($4,166,667)
McNabb ($650,000)--Greene ($2,500,000)
Schultz ($850,000)
Quick ($5,800,000)
Jones ($650,000)
Payroll= $68,343,519
Cap Space= $1,656,481 for 21 players.
So you have 2 open spots to fill for one winger and a replacement player(don't really need but good to have):
Zykov--LW/RW ($735,833)
Sabourin--RW ($753,333)
Nolan--RW/C ($850,000)
It will be very tight, and if Pearson/Toffoli/Jones get more money, someone will have to go or the Kings would have to trade for a cheap player and get retention like that one time with Frattin.